Address side of a postcard sent by a Polish prisoner in Auschwitz, Kasimir Rozycki, to his wife, Stephania in Warsaw.

Address side of a postcard sent by a Polish prisoner in Auschwitz, Kasimir Rozycki, to his wife, Stephania in Warsaw.

The rules governing the sending and receiving of letters and packages by prisoners are listed at the left side of the card. According to these rules, an inmate was allowed to receive letters from his relatives once a month. The letters had to be written in ink, be legible, and not more than 15 lines long. They were to be mailed in unsealed envelopes and were not to exceed a certain size. The text on a postcard could not be more than 10 lines long; picture postcards were forbidden. Nothing was to be enclosed in letters, and prisoners were not allowed to receive packages "because prisoners can purchase everything they need in the camp." Newspapers could be received by prisoners, however, so long as they were ordered through the camp administration.